Peter Brennan, MD
NPI 1780655118 · Gastroenterology Physician · Ithaca, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Brennan, MD is a Gastroenterology Physician provider in Ithaca, NY (NPI 1780655118).
Provider details
- NPI number
- 1780655118
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 161989 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
493 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 110 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 54 | $86 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 54 | $5 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 47 | $5 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 87 | 34 |
| Omeprazole | 60 | 22 |
| Famotidine | 42 | 14 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 29 | 29 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 23 | 23 |
| Lipase/Protease/Amylasebrand: Creon | 23 | — |
| Ursodiol | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$552 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 2435 N Triphammer RdIthaca, NY 14850-1047Phone: (607) 272-5011Fax: (607) 272-5861
Registry dates
- Enumerated
- 2006-02-01
- Last updated
- 2018-08-02
Frequently asked questions
- What is Peter Brennan's NPI number?
- Peter Brennan's National Provider Identifier (NPI) is 1780655118, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Brennan's specialty?
- Peter Brennan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Brennan located?
- Peter Brennan's practice location on file with NPPES is 2 Ascot Pl, Ithaca, NY 14850.
- What is Peter Brennan's phone number?
- The practice phone number listed in the NPPES registry for Peter Brennan is (607) 339-0788.
- Does Peter Brennan accept Medicare?
- Peter Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Brennan's NPI active?
- Yes — Peter Brennan's NPI (1780655118) is active in the NPPES registry as of the last update on 2018-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.